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errorlist.go
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errorlist.go
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/*
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package watch
import (
"errors"
"fmt"
"strings"
"k8s.io/apimachinery/pkg/runtime/schema"
)
type gvkErr struct {
err error
gvk schema.GroupVersionKind
isRemove bool
}
func (w gvkErr) String() string {
return w.Error()
}
func (w gvkErr) Error() string {
return fmt.Sprintf("error for gvk: %s: %s", w.gvk, w.err.Error())
}
// ErrorList is an error that aggregates multiple errors.
type ErrorList struct {
errs []error
hasGeneralErr bool
}
func NewErrorList() *ErrorList {
return &ErrorList{
errs: []error{},
}
}
func (e *ErrorList) String() string {
return e.Error()
}
func (e *ErrorList) Error() string {
var builder strings.Builder
for i, err := range e.errs {
if i > 0 {
builder.WriteRune('\n')
}
builder.WriteString(err.Error())
}
return builder.String()
}
// Return gvks for which there were errors adding watches.
func (e *ErrorList) AddGVKFailures() []schema.GroupVersionKind {
gvks := []schema.GroupVersionKind{}
for _, err := range e.errs {
var gvkErr gvkErr
if errors.As(err, &gvkErr) && !gvkErr.isRemove {
gvks = append(gvks, gvkErr.gvk)
}
}
return gvks
}
// Return gvks for which there were errors removing watches.
func (e *ErrorList) RemoveGVKFailures() []schema.GroupVersionKind {
gvks := []schema.GroupVersionKind{}
for _, err := range e.errs {
var gvkErr gvkErr
if errors.As(err, &gvkErr) && gvkErr.isRemove {
gvks = append(gvks, gvkErr.gvk)
}
}
return gvks
}
func (e *ErrorList) HasGeneralErr() bool {
return e.hasGeneralErr
}
// adds a non gvk specific error to the list.
func (e *ErrorList) Err(err error) {
e.errs = append(e.errs, err)
e.hasGeneralErr = true
}
// adds a gvk specific error for failing to add a gvk watch to the list.
func (e *ErrorList) AddGVKErr(gvk schema.GroupVersionKind, err error) {
e.errs = append(e.errs, gvkErr{gvk: gvk, err: err})
}
// adds a gvk specific error for failing to remove a gvk watch to the list.
func (e *ErrorList) RemoveGVKErr(gvk schema.GroupVersionKind, err error) {
e.errs = append(e.errs, gvkErr{gvk: gvk, err: err, isRemove: true})
}
func (e *ErrorList) Size() int {
return len(e.errs)
}